Georoe miller sternberg



G.M.STERNBBRG. ELEGTROMAGNETIGREGULATOR FOR DAMPBRS 0R VALVES.

No. 100,462. I Patented Mahl, 1870.

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" 'tate 1 met @like :insieme-mensaxe aneurisma ren namens 'on 'venirne The Schedule referred to in these Letters Patent and part o! the same To all when@ it may concern: l Beit known that I, GEORGE'MILLER STERNBERG, of'Fort-Riley, in thecountyof Davis, and State Aof Kansas, have invented anew and improved Automatic ter-tubeaud-terminates at the point- Vin the scale where the temperature ofthe room' should be kept. Whe|1 ever the mercury is below this point, the valve ,by

Regulator for Valves, Danipers,-L&c.'; and I do hereby declare that the 'tbllowingtis a full, clear,D and exact descriptioupf 'the construction 'and operation of the same, reference beingbad tothe accompanying drawiugs making a. partA ofthisspecitication, in which-- Figure 1 is a sideelevation, including a-view ofa regulating-thermometer interposed in the elec'tncal Figule 2 is a plan view. v

Fi gute-3 is a detachedview of an appaiatu's for regulatig the' pressure of steamin a boiler. Figure 4 is a detached ,View of a reservoir-feed, similarly provided' This invention consists in a two-sided[clock-mechanism', by means'ot which; ali'falve may be turned to the right or left, -t'hus increasing 'or diminishing the flow of any gas or liquid through it.. The valve-moving mechanism is regulated by a lever, which throws one or the otherA side of "the apparatus into gear, causingthe valve to be gradually turned on o|'oii`. r[his lever is worked by a temporary magnet, which, when 4an electrical current circulates through its helix, attracts an armature attached to the lever. A galvauic battery of'any kind may be usedto'produce the required electric current.

Interposed between the helix oi` the temporary magregulated, the regulator is a lthermometer imrnelscd in it, and so constructed that the risingorfalling of the mercury in the thermometer establishes or breaks the'circuit.

hen the pressure of steam or gases is to be regulated, the regulatormay be a safety-`val ve or a steam-v ?auge, interposed in thc circuit, so that the rising or alliug of the lever. of the'saety-'Valv'e or the needle oi" the steam-gauge may .make or break the circuit.v

`When the heightof a liquid' infa reservoir is-tobe .icgulated,' a cup ,of mercury floating upon its surface establishes the circuit, by meeting or receding from au adjustable wire.

`In thc'drawingsv l t A is a helix, surrounding'- a temporary muguet, conveniently placedwith reference to the double system i tliiin-work E B', which is kept in motion by weights Que wire, d, of the'battery runs into thefbulbff-ota thermometer, C, supposed tobe hung against the wall- 'ofjanapartment, and has contact witlrthe mercury.

The other wire, c', enters the top of the ,thermomewhich warm air cntersfthe 1o,oin is gradually opening.

When the atmosphere -of the place-is suiiiciently heated to cause the mercury' to' rise so that it'touches theend of -tlc wire c', an electric circuit is, established, and the armature e". attached to the coils.' Y

The armature thereupon operates, by the lever c, to elevate one end ot' a levcr, b, anddenress the other end.

' AV.The extremities of the lever b. bear small spur-gears b b", immediately under which, at a distance sufficientI 4for a slight play of' the4 lever, are two cog-wheels -c c placed at the ends of shafts.c c, which are sustained insuitable bearings c cf", Att their opposite ends-the shafts c are connected with the doublesystem of trainwork B '15', each half ot" the system heilig, in all respects, like the other half, and veach set in motion in the same direction by weightsB B. v

There is loosely placed on each shaft c, a ,cog-wheel' d, of the same size and seriati'on as tliewheels c c", and quite near the-latter, but not necessarily incontact, t-he wheels d having windla-sses d' d"`counected with them, and iuclosing the shaft' c. f

Around the windlasses d d" are wound .the extremitics' of a cord, d", which cord, at its' middle portion,

-passes'over or around a wheel, e, fixed upon the Iralveshaft e', so as to produce suliicient tension to turu the wheel, and thus operatethe valve when the. cord moves in either direction, owing tothe rotation of the windlasses d lll', but the wheels-and windlasscs d d and d d, being loose on their shafts, can only rcceivemotion from the train-`work B B', when thrown into gear, in

4some manner, therewith, and they are altcmately thus thrown into gear by the small spur-gears b' b", o n the ends ofthe lever b, the spur-gears being wide enough to engage with both wheels c' d or c d at once, and

thus connect them and .communicate 4motion of thebroken, the left' spur-gear b is made to engage, by a o spring, h, ouwe-ight, wif-h the opposite wheels c' d,

-c, fig. 1, is immersed in it'.

which are rotated in the contrary direction to the wheels c"`d, and thus cause the valve to swing in the direction ot' opening. p

The'windlass d", being loose on its shaft, reverses its motion under the strain of the cord d", without interfering with the wheel c, which still revolves undisturbed in its original direction. The same is true ofthe windlass d', when the valve is closing. v

In this manner the temperature of any room heated by warm air from a furnace may be kept` at any par.l ticular point without varying more .that about half a degrec'on either side, as long as the supply-current continues to tiow. v

When the object to be obtained is the regulation of thc temperature of' a gas or liquid, the thermometer This thermometer liasa wire 4permanently communicating with the mercury in its bulb, and au adjustable wire which maybe slipped into its tube for any desircd'distance.

The end of the adjustable wire having been thrust into-thc thermometer-tube to the point at which the temperature is to be maintained, and the valve-operating apparatus put in motion, the temperature ofthe liquid or gas is raised by the gradual opening of the valve which governs 'the supply of heat. This valve may be the damper of a furnace, or a damper in a hotair flue, a coclf. in a. steam-pipe used for heating,'or any similar coutrivancc. y

When the increasing temperatureof the liquid or gas causes the mercury in the tube of the thermometer to reach the wire, an electric circuit is completed, the current through the helix A causes the temporary magnet to attract the armature a", and the lever attached to'it throws out ofgear the valve-opening part ture causes the mercury in the thermometer to fallbelow the point of the wire, and the electriccircuit to be broken, and the valve-opening part of the apparatus to again operate. lhus the mercury oscillates at the point of the wire, establishing and breaking the `circuit,nd' the liquid or gas is kept nearly at a conf stant temperature.

Having thus' described my invention,

What I claim as new. and desire to secure by Letters Patent, isf- The combination, with the armature of an electric apparatus, of the levers and b, the latter being provided with spin-gearsv b' b, cog-wheels c c", double system of train-work B B', operated by weights, and loose cog-wheels d, substantially in the manner described, and for the purpose of communicating motion alternately in` opposite direction to the valve.

GEO. M. STER-NBERG;

Witnesses:

NATHAN K. ELLswonTn, SoLoN C. Kenton. 

